<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        html,
        body {
            height: 100%;
            width: 100%;
            margin: 0;
            padding: 0;
        }

        #myCanvas {
            display: block;
            height: 100%;
            width: 100%;
            z-index: -1;
        }
    </style>
</head>

<body>
    <canvas id="myCanvas" style="z-index: -1">Canvas画线技巧</canvas>
    <script src="../dist/circle.js">
        // var script = document.querySelector("#main");
        // script.src="./bool.test.js"
    </script>
</body>

</html>